/*
 * Copyright (C) 2015 EDF SA
 *
 * This file is part of slurm-web.
 *
 * slurm-web is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * slurm-web is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with slurm-web.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

 /*eslint-disable */

/*
 * The MIT License
 *
 * Copyright © 2010-2015 three.js authors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

/**
 * @author qiao / https://github.com/qiao
 * @author mrdoob / http://mrdoob.com
 * @author alteredq / http://alteredqualia.com/
 * @author WestLangley / http://github.com/WestLangley
 * @author erich666 / http://erichaines.com
 */
/*global THREE, console */

// This set of controls performs orbiting, dollying (zooming), and panning. It maintains
// the "up" direction as +Y, unlike the TrackballControls. Touch on tablet and phones is
// supported.
//
//    Orbit - left mouse / touch: one finger move
//    Zoom - middle mouse, or mousewheel / touch: two finger spread or squish
//    Pan - right mouse, or arrow keys / touch: three finter swipe
//
// This is a drop-in replacement for (most) TrackballControls used in examples.
// That is, include this js file and wherever you see:
//      controls = new THREE.TrackballControls( camera );
//      controls.target.z = 150;
// Simple substitute "OrbitControls" and the control should work as-is.

define([
  'jquery',
  'three'
], function ($, THREE) {

  THREE.OrbitControls = function ( object, domElement ) {

    this.object = object;
    this.domElement = ( domElement !== undefined ) ? domElement : document;

    // API

    // Set to false to disable this control
    this.enabled = true;

    // "target" sets the location of focus, where the control orbits around
    // and where it pans with respect to.
    this.target = new THREE.Vector3();
    // center is old, deprecated; use "target" instead
    this.center = this.target;

    // This option actually enables dollying in and out; left as "zoom" for
    // backwards compatibility
    this.noZoom = false;
    this.zoomSpeed = 1.0;
    // Limits to how far you can dolly in and out
    this.minDistance = 0;
    this.maxDistance = Infinity;

    // Set to true to disable this control
    this.noRotate = false;
    this.rotateSpeed = 1.0;

    // Set to true to disable this control
    this.noPan = false;
    this.keyPanSpeed = 7.0; // pixels moved per arrow key push

    // Set to true to automatically rotate around the target
    this.autoRotate = false;
    this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60

    // How far you can orbit vertically, upper and lower limits.
    // Range is 0 to Math.PI radians.
    this.minPolarAngle = 0; // radians
    this.maxPolarAngle = Math.PI; // radians

    // Set to true to disable use of the keys
    this.noKeys = false;
    // The four arrow keys
    this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };

    ////////////
    // internals

    var scope = this;

    var EPS = 0.000001;

    var rotateStart = new THREE.Vector2();
    var rotateEnd = new THREE.Vector2();
    var rotateDelta = new THREE.Vector2();

    var panStart = new THREE.Vector2();
    var panEnd = new THREE.Vector2();
    var panDelta = new THREE.Vector2();

    var dollyStart = new THREE.Vector2();
    var dollyEnd = new THREE.Vector2();
    var dollyDelta = new THREE.Vector2();

    var phiDelta = 0;
    var thetaDelta = 0;
    var scale = 1;
    var pan = new THREE.Vector3();

    var lastPosition = new THREE.Vector3();

    var STATE = { NONE : -1, ROTATE : 0, DOLLY : 1, PAN : 2, TOUCH_ROTATE : 3, TOUCH_DOLLY : 4, TOUCH_PAN : 5 };
    var state = STATE.NONE;

    // events

    var changeEvent = { type: 'change' };

    this.rotateLeft = function ( angle ) {

      if ( angle === undefined ) {

        angle = getAutoRotationAngle();

      }

      thetaDelta -= angle;

    };

    this.rotateUp = function ( angle ) {

      if ( angle === undefined ) {

        angle = getAutoRotationAngle();

      }

      phiDelta -= angle;

    };

    // pass in distance in world space to move left
    this.panLeft = function ( distance ) {

      var panOffset = new THREE.Vector3();
      var te = this.object.matrix.elements;
      // get X column of matrix
      panOffset.set( te[0], te[1], te[2] );
      panOffset.multiplyScalar(-distance);

      pan.add( panOffset );

    };

    // pass in distance in world space to move up
    this.panUp = function ( distance ) {

      var panOffset = new THREE.Vector3();
      var te = this.object.matrix.elements;
      // get Y column of matrix
      panOffset.set( te[4], te[5], te[6] );
      panOffset.multiplyScalar(distance);

      pan.add( panOffset );
    };

    // main entry point; pass in Vector2 of change desired in pixel space,
    // right and down are positive
    this.pan = function ( delta ) {

      var element = scope.domElement === document ? scope.domElement.body : scope.domElement;

      if ( scope.object.fov !== undefined ) {

        // perspective
        var position = scope.object.position;
        var offset = position.clone().sub( scope.target );
        var targetDistance = offset.length();

        // half of the fov is center to top of screen
        targetDistance *= Math.tan( (scope.object.fov/2) * Math.PI / 180.0 );
        // we actually don't use screenWidth, since perspective camera is fixed to screen height
        scope.panLeft( 2 * delta.x * targetDistance / element.clientHeight );
        scope.panUp( 2 * delta.y * targetDistance / element.clientHeight );

      } else if ( scope.object.top !== undefined ) {

        // orthographic
        scope.panLeft( delta.x * (scope.object.right - scope.object.left) / element.clientWidth );
        scope.panUp( delta.y * (scope.object.top - scope.object.bottom) / element.clientHeight );

      } else {

        // camera neither orthographic or perspective - warn user
        console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );

      }

    };

    this.dollyIn = function ( dollyScale ) {

      if ( dollyScale === undefined ) {

        dollyScale = getZoomScale();

      }

      scale /= dollyScale;

    };

    this.dollyOut = function ( dollyScale ) {

      if ( dollyScale === undefined ) {

        dollyScale = getZoomScale();

      }

      scale *= dollyScale;

    };

    this.update = function () {

      var position = this.object.position;
      var offset = position.clone().sub( this.target );

      // angle from z-axis around y-axis

      var theta = Math.atan2( offset.x, offset.z );

      // angle from y-axis

      var phi = Math.atan2( Math.sqrt( offset.x * offset.x + offset.z * offset.z ), offset.y );

      if ( this.autoRotate ) {

        this.rotateLeft( getAutoRotationAngle() );

      }

      theta += thetaDelta;
      phi += phiDelta;

      // restrict phi to be between desired limits
      phi = Math.max( this.minPolarAngle, Math.min( this.maxPolarAngle, phi ) );

      // restrict phi to be betwee EPS and PI-EPS
      phi = Math.max( EPS, Math.min( Math.PI - EPS, phi ) );

      var radius = offset.length() * scale;

      // restrict radius to be between desired limits
      radius = Math.max( this.minDistance, Math.min( this.maxDistance, radius ) );

      // move target to panned location
      this.target.add( pan );

      offset.x = radius * Math.sin( phi ) * Math.sin( theta );
      offset.y = radius * Math.cos( phi );
      offset.z = radius * Math.sin( phi ) * Math.cos( theta );

      position.copy( this.target ).add( offset );

      this.object.lookAt( this.target );

      thetaDelta = 0;
      phiDelta = 0;
      scale = 1;
      pan.set(0,0,0);

      if ( lastPosition.distanceTo( this.object.position ) > 0 ) {

        this.dispatchEvent( changeEvent );

        lastPosition.copy( this.object.position );

      }

    };


    function getAutoRotationAngle() {

      return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;

    }

    function getZoomScale() {

      return Math.pow( 0.95, scope.zoomSpeed );

    }

    function onMouseDown( event ) {

      if ( scope.enabled === false ) { return; }
      event.preventDefault();

      if ( event.button === 0 ) {
        if ( scope.noRotate === true ) { return; }

        state = STATE.ROTATE;

        rotateStart.set( event.clientX, event.clientY );

      } else if ( event.button === 1 ) {
        if ( scope.noZoom === true ) { return; }

        state = STATE.DOLLY;

        dollyStart.set( event.clientX, event.clientY );

      } else if ( event.button === 2 ) {
        if ( scope.noPan === true ) { return; }

        state = STATE.PAN;

        panStart.set( event.clientX, event.clientY );

      }

      // Greggman fix: https://github.com/greggman/three.js/commit/fde9f9917d6d8381f06bf22cdff766029d1761be
      //scope.domElement.addEventListener( 'mousemove', onMouseMove, false );
      //scope.domElement.addEventListener( 'mouseup', onMouseUp, false );
      $(document).on('mousemove', onMouseMove);
      $(document).on('mouseup', onMouseUp);
    }

    function onMouseMove( event ) {

      if ( scope.enabled === false ) return;

      event.preventDefault();

      var element = scope.domElement === document ? scope.domElement.body : scope.domElement;

      if ( state === STATE.ROTATE ) {

        if ( scope.noRotate === true ) return;

        rotateEnd.set( event.clientX, event.clientY );
        rotateDelta.subVectors( rotateEnd, rotateStart );

        // rotating across whole screen goes 360 degrees around
        scope.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
        // rotating up and down along whole screen attempts to go 360, but limited to 180
        scope.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );

        rotateStart.copy( rotateEnd );

      } else if ( state === STATE.DOLLY ) {

        if ( scope.noZoom === true ) return;

        dollyEnd.set( event.clientX, event.clientY );
        dollyDelta.subVectors( dollyEnd, dollyStart );

        if ( dollyDelta.y > 0 ) {

          scope.dollyIn();

        } else {

          scope.dollyOut();

        }

        dollyStart.copy( dollyEnd );

      } else if ( state === STATE.PAN ) {

        if ( scope.noPan === true ) return;

        panEnd.set( event.clientX, event.clientY );
        panDelta.subVectors( panEnd, panStart );

        scope.pan( panDelta );

        panStart.copy( panEnd );

      }

      // Greggman fix: https://github.com/greggman/three.js/commit/fde9f9917d6d8381f06bf22cdff766029d1761be
      scope.update();

    }

    function onMouseUp( /* event */ ) {
      if ( scope.enabled === false ) return;

      // Greggman fix: https://github.com/greggman/three.js/commit/fde9f9917d6d8381f06bf22cdff766029d1761be
      //scope.domElement.removeEventListener( 'mousemove', onMouseMove, false );
      //scope.domElement.removeEventListener( 'mouseup', onMouseUp, false );

      $(document).on('mousemove', onMouseMove);
      $(document).on('mouseup', onMouseUp);

      state = STATE.NONE;

    }

    function onMouseWheel( event ) {
      event.preventDefault();

      event.wheelDelta = event.originalEvent.wheelDelta;

      if ( scope.enabled === false || scope.noZoom === true ) return;

      var delta = 0;

      if ( event.wheelDelta ) { // WebKit / Opera / Explorer 9

        delta = event.wheelDelta;

      } else if (event.originalEvent.detail) {
        delta = - event.originalEvent.detail;
      }

      if ( delta > 0 ) {

        scope.dollyOut();

      } else {

        scope.dollyIn();

      }

    }

    function onKeyDown( event ) {

      if ( scope.enabled === false ) { return; }
      if ( scope.noKeys === true ) { return; }
      if ( scope.noPan === true ) { return; }

      // pan a pixel - I guess for precise positioning?
      // Greggman fix: https://github.com/greggman/three.js/commit/fde9f9917d6d8381f06bf22cdff766029d1761be
      var needUpdate = false;

      switch ( event.keyCode ) {

        case scope.keys.UP:
          scope.pan( new THREE.Vector2( 0, scope.keyPanSpeed ) );
          needUpdate = true;
          break;
        case scope.keys.BOTTOM:
          scope.pan( new THREE.Vector2( 0, -scope.keyPanSpeed ) );
          needUpdate = true;
          break;
        case scope.keys.LEFT:
          scope.pan( new THREE.Vector2( scope.keyPanSpeed, 0 ) );
          needUpdate = true;
          break;
        case scope.keys.RIGHT:
          scope.pan( new THREE.Vector2( -scope.keyPanSpeed, 0 ) );
          needUpdate = true;
          break;
      }

      // Greggman fix: https://github.com/greggman/three.js/commit/fde9f9917d6d8381f06bf22cdff766029d1761be
      if ( needUpdate ) {

        scope.update();

      }

    }

    function touchstart( event ) {

      if ( scope.enabled === false ) { return; }

      switch ( event.touches.length ) {

        case 1: // one-fingered touch: rotate
          if ( scope.noRotate === true ) { return; }

          state = STATE.TOUCH_ROTATE;

          rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
          break;

        case 2: // two-fingered touch: dolly
          if ( scope.noZoom === true ) { return; }

          state = STATE.TOUCH_DOLLY;

          var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
          var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
          var distance = Math.sqrt( dx * dx + dy * dy );
          dollyStart.set( 0, distance );
          break;

        case 3: // three-fingered touch: pan
          if ( scope.noPan === true ) { return; }

          state = STATE.TOUCH_PAN;

          panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
          break;

        default:
          state = STATE.NONE;

      }
    }

    function touchmove( event ) {

      if ( scope.enabled === false ) { return; }

      event.preventDefault();
      event.stopPropagation();

      var element = scope.domElement === document ? scope.domElement.body : scope.domElement;

      switch ( event.touches.length ) {

        case 1: // one-fingered touch: rotate
          if ( scope.noRotate === true ) { return; }
          if ( state !== STATE.TOUCH_ROTATE ) { return; }

          rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
          rotateDelta.subVectors( rotateEnd, rotateStart );

          // rotating across whole screen goes 360 degrees around
          scope.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
          // rotating up and down along whole screen attempts to go 360, but limited to 180
          scope.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );

          rotateStart.copy( rotateEnd );
          break;

        case 2: // two-fingered touch: dolly
          if ( scope.noZoom === true ) { return; }
          if ( state !== STATE.TOUCH_DOLLY ) { return; }

          var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
          var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
          var distance = Math.sqrt( dx * dx + dy * dy );

          dollyEnd.set( 0, distance );
          dollyDelta.subVectors( dollyEnd, dollyStart );

          if ( dollyDelta.y > 0 ) {

            scope.dollyOut();

          } else {

            scope.dollyIn();

          }

          dollyStart.copy( dollyEnd );
          break;

        case 3: // three-fingered touch: pan
          if ( scope.noPan === true ) { return; }
          if ( state !== STATE.TOUCH_PAN ) { return; }

          panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
          panDelta.subVectors( panEnd, panStart );

          scope.pan( panDelta );

          panStart.copy( panEnd );
          break;

        default:
          state = STATE.NONE;

      }

    }

    function touchend( /* event */ ) {

      if ( scope.enabled === false ) { return; }

      state = STATE.NONE;
    }

    $(document).on('contextmenu', function (event) { event.preventDefault() });
    $(document).on('mousedown', onMouseDown);
    $(document).on('mousewheel', onMouseWheel);
    $(document).on('DOMMouseScroll', onMouseWheel);
    $(document).on('touchstart', touchstart);
    $(document).on('touchend', touchend);
    $(document).on('touchmove', touchmove);

  };

  THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype );
});
